Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 37/16.5-30 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 36.93 (937.98) | -0.51 (-13.02) -1.4% |
| Width inches (mm) | 12.4 (315) | 16.5 (419) | 4.09 (104) 33% |
| Circum. inches (mm) | 117.62 (2987.65) | 116.01 (2946.75) | -1.61 (-40.9) -1.4% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.46 (87.99) | -0.26 (-6.51) -6.9% |
| Revolutions per mile (km) | 538.66 (334.71) | 546.14 (339.36) | 7.48 (4.65) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.73 mph (31.75 km/h) |
| 25 mph (40.23 km/h) | 24.66 mph (39.68 km/h) |
| 30 mph (48.28 km/h) | 29.59 mph (47.62 km/h) |
| 35 mph (56.33 km/h) | 34.52 mph (55.56 km/h) |
| 40 mph (64.37 km/h) | 39.45 mph (63.49 km/h) |
| 45 mph (72.42 km/h) | 44.38 mph (71.43 km/h) |
| 50 mph (80.47 km/h) | 49.32 mph (79.37 km/h) |
| 55 mph (88.51 km/h) | 54.25 mph (87.3 km/h) |
| 60 mph (96.56 km/h) | 59.18 mph (95.24 km/h) |
| 65 mph (104.61 km/h) | 64.11 mph (103.18 km/h) |
| 70 mph (112.65 km/h) | 69.04 mph (111.11 km/h) |
| 75 mph (120.7 km/h) | 73.97 mph (119.05 km/h) |
| 80 mph (128.75 km/h) | 78.9 mph (126.99 km/h) |
| 85 mph (136.79 km/h) | 83.84 mph (134.92 km/h) |
| 90 mph (144.84 km/h) | 88.77 mph (142.86 km/h) |
| 95 mph (152.89 km/h) | 93.7 mph (150.79 km/h) |
| 100 mph (160.93 km/h) | 98.63 mph (158.73 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1390 | 1615 | 1739 | 1816 | 1898 | 1958 | 2023 | 2100 | 2206 | 2312 | 2431 | 2525 | 2697 | 2886 | 3034 | 3129 | 3182 | 3377 | 3649 | 4240 |
Better Fuel Economy Factory Ratios Increased Power
